4.6 Article

A Stable NanoPAA-ZnO/ZnCl2 Composite with Variable 3D Structured Morphology and Sustained Superhydrophilicity

Journal

LANGMUIR
Volume 37, Issue 18, Pages 5457-5463

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.0c03257

Keywords

-

Funding

  1. National Natural Science Foundation of China [61378083, 61405159]
  2. International Cooperation Foundation of the National Science and Technology Major Project of the Ministry of Science and Technology of China [2011DFA12220]
  3. Natural Science Basic Research Program of Shaanxi Province-Major Basic Research Project [2018TD-018, 2016ZDJC-15]
  4. National key scientific instrument and equipment development projects of China [51927804]

Ask authors/readers for more resources

A ZnO/ZnCl2 composite with stable 3D structural morphologies and long lasting superhydrophilicity was synthesized on a nanoPAA substrate. The water contact angle of the composite could be maintained at 0 degrees for 7 days and remained low even after 50 days. The superhydrophilicity mechanism was attributed to the properties of the ZnO/ZnCl2 nanofilm, wrinkled nanoflakes, nanogaps, and structural morphologies.
A ZnO/ZnCl2 composite with stable 3D structural morphologies and long lasting superhydrophilicity was synthesized on the top surface of a nano porous anodic alumina (nanoPAA) substrate. The wettability of a nanoPAA-ZnO/ZnCl2 was systematically characterized and the experimental data indicated that the water contact angle (WCA) of 0 degrees could be achieved as well as maintained over 7 days and still remained at 4.36 degrees after 50 days, and its 3D structural morphology had no clearly observable change during this period. The mechanism for the superhydrophilicity of the composites was interpreted in terms of the inherent hydrophilicity of ZnO/ZnCl2 nanofilm, the three-dimensional structures of wrinkled nanoflakes, the nanogaps between neighbor nanoflakes, the difference of structual morphologies (i.e., size, shape, and upright posture of nanoflakes), and the measured True Volume of voids in the nanocomposite. The structural morphologies were mainly determined by the parameters such as the original concentration of precursor ZnCl2 and the pore diameter of nanoPAA substrate. The study proposes a promising superhydrophilic nanomaterial and a cost-effective synthesis method, which will play a practical role in the fields of biomedical molecular sensors and micro/nanofluidic chips.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available